Granted Patent
Utility
US 6,477,375 · App. 09/293,390
Method and system for reducing call setup processing cost by determining when to forward calls to detached subscribers
Inventors:
Joseph S. M. Ho, Hector Maturino
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Apr 16, 1999
Inventors
Joseph S. M. Ho
Hector Maturino
Assignee (at issue)
Nortel Networks Limited
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.